EasyDGVCL Vidyut Sahayak JE (Electrical)2024

Refer to the following five three-digit numbers and answer the question. 156, 258, 435, 697, 421. If 2 is added to the first digit of each number, in how many numbers is the new first digit exactly divisible by the second digit?

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Answer & Explanation

Correct AnswerD. Two

Quick Explanation

After adding 2 to the first digit: 356, 458, 635, 897, 621. In 635, 6 is divisible by 3; in 621, 6 is divisible by 2. Thus, two numbers satisfy the condition.

Formula / Key Relation

Divisibility check: new first digit % second digit = 0

Detailed Explanation

After adding 2 to the first digit: 356, 458, 635, 897, 621. In 635, 6 is divisible by 3; in 621, 6 is divisible by 2. Thus, two numbers satisfy the condition.

Quick Trick

Apply the digit change first, then test divisibility.

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DGVCL VS JE ELECTRICAL SHIFT 12024 Shift 1

Refer to the following five three-digit numbers and answer the question. 156, 258, 435, 697, 421. If 2 is added to the first digit of each number, in how many numbers is the new first digit exactly divisible by the second digit?

Quick Explanation

Formula / Key Relation

Detailed Explanation

Quick Trick

Previous Exam Appearances

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